10.14489/td.2022.04.pp.040-047

2022, 04 April

DOI: 10.14489/td.2022.04.pp.040-047

Gordeev B. A., Okhulkov S. N., Ermolaev A. I., Makarskov A. A., Osmekhin A. N.
VIBRATION DIAGNOSTICS OF ELECTROMECHANICAL COMPLEXES OVER 40 KW
(pp. 40-47)

Abstract. Measurements were carried out at different points of the machine and workshop using the vibrometer “Vibran 2.2”. At the step of studying vibration spectrograms it was found that shock loads significantly prevail over vibration, and the main harmonic of vibration is characterized by a frequency of 7…8 Hz corresponds to the rotation frequency of the middle shafts of the machine. Theoretical methods have established the cause of the progressive vibration generated by the rotation of the massive shafts of the paper-making machine caused, on the one hand, by the bearings wear accompanied by deformation of the rings and mutual displacement of their axes of rotation and, on the other hand, by an increase in the radii of the eccentricity of the shafts, leading to increase in dynamic loads acting on the bearing units. The authors of the article, who are directly involved in the vibration diagnostics of the machine came to the conclusion that in order to reduce its vibration it is enough to replace bearings with new ones which due to prolonged operation (more than 25 years) and the influence of vibration and shock loads have long worked out their service life.

Keywords: vibration diagnostics, vibration, shock loads, shaft eccentricity, electric motor, induction motor, bearing wear, paper-making machine.

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B. A. Gordeev, S. N. Okhulkov, A. I. Ermolaev (Mechanical Engineering Research Institute of RAS, N. Novgorod, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
A. A. Makarskov (KOPOS-NN Ltd., N. Novgorod, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
A. N. Osmekhin (JSC “Afrikantov OKB Mechanical Engineering”, N. Novgorod, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

+ - References Click to collapse

1. Vibration. Monitoring the condition of machines based on the results of vibration measurements on non-rotating parts. (1998). Ru Standard No. GOST ISO 10816-1–97. Moscow: Izdatel'stvo standartov. [in Russian language]
2. JSC "Volga" - Balakhna paper mill. Equipment. Available at: http://volga-paper.ru/company/production/ equipment/ (Accessed: 29.12.2020). [in Russian language]
3. Kaminskiy S. G. (2004). Development of methods for vibration diagnostics and restoration of electric oilfield pumping units. Ufa: Izdatel'stvo UGNTU. [in Russian language]
4. Vas'kovskiy Yu. N., Geraskin A. A. (2014). Vibrodiagnostics of rotor eccentricity of asynchronous machines based on the analysis of vibrodisturbing forces. Collection of scientific works "Bulletin of NTU" KhPI ": Electric machines and electromechanical energy conversion", 38, pp. 52 – 62. [in Russian language]
5. Kruchinina I. Yu., Hozikov Yu. F., Pal'tseva V. V. (2014). Evaluation of the Influence of Rotor Eccentricity on Radial Electrodynamic Forces in Modern Synchronous Electric Machines. Izvestiya SPbGETU LETI, (8), pp. 52 – 56. [in Russian language]
6. Baykov A. I., Dar'enkov A. B., Plekhov A. S. et al. (2016). Vibration analysis of motors mounted on the same base. Proceedings of the IX International (XX All-Russian) conference on automated electric drive AEP-2016, pp. 8 – 12. Perm'. [in Russian language]
7. Gordeev B. A., Baykov A. I., Dar'enkov A. B. (2017). Simulation of testing processes of vibration mounts on the experimental stand. Mashinostroenie: setevoy elektronniy nauchniy zhurnal, Vol. 5, (2), pp. 56 – 61. [in Russian language]
8. Rolling bearings. Dynamic load rating and rated life (corrected). (2015). Interstate standard No. GOST 18855–2013 (ISO 281:2007). Moscow: AO «Kodeks». [in Russian language]
9. How to convert vibration velocity into vibration acceleration? Vibro-Center. Available at: https://vibrocenter.ru/vibroacc_vel.htm (Accessed: 08.01.2021). [in Russian language]
10. «Elektropostavshchik» LLC (Cable.RF portal). Rolling bearings. Available at: https://nn.cable.ru/bearings/ (Accessed: 08.01.2021). [in Russian language].

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